Research Article
Performance Investigation and Structure Optimization of a Flat Dual-Function Solar Collector
Table 3
Water heating efficiency of the collector in different days.
| Date | (°C) | Tinital (°C) | Tfinal (°C) | (°C) | (MJ/m2 day) | (%) | (%) |
| 03/31 | 18.5 | 13.0 | 55.2 | 42.2 | 24.3 | 58.2 | 4.37 | 04/01 | 26.5 | 28.5 | 58.1 | 29.7 | 18.0 | 55.2 | 5.37 | 04/07 | 22.2 | 17.2 | 51.9 | 34.7 | 19.2 | 60.8 | 4.88 | 04/26 | 24.2 | 17.1 | 57.7 | 40.6 | 22.8 | 59.7 | 4.46 | 05/09 | 26.4 | 22.6 | 43.0 | 20.4 | 11.3 | 60.6 | 6.90 | 05/10 | 27.4 | 23.0 | 58.8 | 35.8 | 20.9 | 57.5 | 4.79 | 05/11 | 28.4 | 28.4 | 58.6 | 30.2 | 17.7 | 57.3 | 5.31 | 05/16 | 30.3 | 32.6 | 60.3 | 27.7 | 16.6 | 56.0 | 5.61 | 05/21 | 21.8 | 17.8 | 54.7 | 36.9 | 21.2 | 58.3 | 4.71 | 06/02 | 27.4 | 28.0 | 52.3 | 24.4 | 14.5 | 56.4 | 6.10 | 06/08 | 32.6 | 25.7 | 57.3 | 31.7 | 17.3 | 61.4 | 5.15 | 06/12 | 31.9 | 26.4 | 55.5 | 29.1 | 16.3 | 60.0 | 5.44 |
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